Patterns of Terrorism in the United States, 1970-2013 Final Report to Resilient Systems Division, DHS Science and Technology Directorate October 2014 National Consortium for the Study of Terrorism and Responses to Terrorism A Department of Homeland Security Science and Technology Center of Excellence Based at the University of Maryland 8400 Baltimore Ave, Suite 250 • College Park, MD 20740 • 301.405.6600 www.start.umd.edu National Consortium for the Study of Terrorism and Responses to Terrorism A Department of Homeland Security Science and Technology Center of Excellence About This Report The author of this report is Erin Miller at the University of Maryland. Questions about this report should be directed to Erin Miller at
[email protected]. The initial collection of data for the Global Terrorism Database (GTD) data was carried out by the Pinkerton Global Intelligence Services (PGIS) between 1970 and 1997 and was donated to the University of Maryland in 2001. Digitizing and validating the original GTD data from 1970 to 1997 was funded by a grant from the National Institute of Justice in 2004 (PIs Gary LaFree and Laura Dugan; grant number: NIJ2002-DT-CX-0001) and in 2005 as part of the START Center of Excellence by the Department of Homeland Security Science and Technology Directorate (DHS S&T), Office of University Programs (PI Gary LaFree; grant numbers N00140510629 and 2008-ST-061-ST0004). Data collection for incidents that occurred between January 1998 and March 2008 and updates to the earlier data to make it consistent with new GTD coding criteria were funded by the DHS S&T Human Factors/Behavioral Sciences Division (HFD) (PIs Gary LaFree and Gary Ackerman; contract number HSHQDC-05-X-00482) and conducted by database staff at the National Consortium for the Study of Terrorism and Responses to Terrorism (START) and the Center for Terrorism and Intelligence Studies (CETIS).